Markhacks creates cardboard pendulums and such. Here’s one with a bunch of bothersome magnets underneath the weight.
I made another pendulum of cardboard. Using multiple magnets with reversed polarity causes chaotic motion.
See the magic of a Tesla Valve
In 1920, the great Nikola Tesla patented this ingenious valve that allows fluid or gas to flow in one direction but not the other. And it does it based entirely on its geometry without any moving parts. Here is the US patent, number 1,329,559.
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A freight train’s emergency brake is applied at 40 MPH. How long does it take to stop?
This video captures a freight train engaging its emergency brake (about 2m in) and grinding slowly to a stop. Momentum is everything… until it’s nothing.
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“Softbody Tetris”: what if tetronimoes were made of jello?
C4D4U’s SOFTBODY TETRIS V16 is (as the name implies), the latest in a series of “softbody” simulations of Tetris, in which the tetronimoes are rubbery, jelly-like solids that glisten as they wobble into place. It’s an incredibly soothing thing to watch (C4D4U calls them “ASMR for my eyes”) and part of a wider genre of […]
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This 10-foot cloth Lightning cable won’t break like those fragile Apple cables and is only $15
While we all love our iPhones and iPads, celebrating the releases of their latest and greatest versions, it’s amusing to consider how much we at the same time HATE the main item that keeps these little tech marvels powered up and working. No, Lightning cables don’t exactly inspire feelings of awe and wonder. It’s more […]
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Forevernote puts your life stories in print forever and it may be the greatest family gift you can give
Every family is chock full of stories. Stories of history, stories of memory, stories of accomplishment and stories of love. From a grandparent’s tales of life decades ago to a couple’s first meeting to amazing life experiences and moments that you wish could be preserved for future generations. Unfortunately, we all don’t have the literary […]
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Bring art to your bedside with this 3-in-1 wireless charging Bluetooth speaker LED lamp
Minimalism isn’t just trendy, it’s also wise. Clearing clutter and keeping things simple in your home is great for both your mind and for the earth. Bring that movement to your bedside when you replace just about everything on and around your nightstand with the Tree of Light: Wireless Charger + Bluetooth Speaker + LED […]